[PATCH v5 2/3] crash: Align the declaration of crash_load_dm_crypt_keys with CONFIG_CRASH_DM_CRYPT

Coiby Xu
2026-02-25T06:04:11Z

This will prevent a compiling failure when CONFIG_CRASH_DUMP is enabled
but CONFIG_CRASH_DM_CRYPT is disabled,

arch/powerpc/kexec/elf_64.c: In function 'elf64_load':
>> arch/powerpc/kexec/elf_64.c:82:23: error: implicit declaration of function 'crash_load_dm_crypt_keys' [-Werror=implicit-function-declaration]
82 | ret = crash_load_dm_crypt_keys(image);
| ^~~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202602120648.RgQALnnI-lkp@intel.com/
Signed-off-by: Coiby Xu <coxu@redhat.com>
---
include/linux/crash_core.h | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/include/linux/crash_core.h b/include/linux/crash_core.h
index d35726d6a415..c1dee3f971a9 100644
--- a/include/linux/crash_core.h
+++ b/include/linux/crash_core.h
@@ -34,13 +34,6 @@ static inline void arch_kexec_protect_crashkres(void) { }
static inline void arch_kexec_unprotect_crashkres(void) { }
#endif

-#ifdef CONFIG_CRASH_DM_CRYPT
-int crash_load_dm_crypt_keys(struct kimage *image);
-ssize_t dm_crypt_keys_read(char *buf, size_t count, u64 *ppos);
-#else
-static inline int crash_load_dm_crypt_keys(struct kimage *image) {return 0; }
-#endif
-
#ifndef arch_crash_handle_hotplug_event
static inline void arch_crash_handle_hotplug_event(struct kimage *image, void *arg) { }
#endif
@@ -96,4 +89,11 @@ static inline void crash_save_cpu(struct pt_regs *regs, int cpu) {};
static inline int kimage_crash_copy_vmcoreinfo(struct kimage *image) { return 0; };
#endif /* CONFIG_CRASH_DUMP*/

+#ifdef CONFIG_CRASH_DM_CRYPT
+int crash_load_dm_crypt_keys(struct kimage *image);
+ssize_t dm_crypt_keys_read(char *buf, size_t count, u64 *ppos);
+#else
+static inline int crash_load_dm_crypt_keys(struct kimage *image) {return 0; }
+#endif
+
#endif /* LINUX_CRASH_CORE_H */
--
2.53.0